When must Transmission Electron Microscopy (TEM) be used under AHERA?

Transmission Electron Microscopy (TEM) is a highly sensitive analytical method used to identify asbestos in various materials, particularly when the asbestos content is low. Under the Asbestos Hazard Emergency Response Act (AHERA), TEM is specifically required in scenarios where materials are suspected of containing asbestos at concentrations of less than 1%. This is crucial because typical methods may not detect low levels of asbestos effectively.

In widely used areas like classrooms, where disturbance could lead to exposure, using TEM allows for a thorough assessment of materials that may contain asbestos, ensuring the safety of students and staff. By employing TEM in these environments, it is possible to make informed decisions about remedial actions based on accurate data on asbestos presence.

Applying this testing method comprehensively in areas where school activities frequently occur enhances overall risk management strategies and complies with regulatory requirements to protect public health.